CVE-2015-4498: n/a vulnerability

CVE-2015-4498: The add-on installation feature in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows...

The add-on installation feature in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to bypass an intended user-confirmation requirement by constructing a crafted data: URL and triggering navigation to an arbitrary http: or https: URL at a certain early point in the installation process.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 06:18 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2015-4498 is an old Mozilla Firefox add-on installation flaw. A malicious website could bypass an intended user-confirmation step during add-on installation by abusing a crafted data URL and early navigation timing. The concern is unauthorized or misleading add-on installation on unpatched legacy browsers. Exposure is most likely in legacy systems, unmanaged endpoints, old Linux distribution packages, or embedded desktop images still running Firefox before 40.0.3 or Firefox ESR 38.x before 38.2.1. Treat this as a legacy hygiene issue unless old Firefox builds remain in production. Prioritize remediation where outdated browsers are used for internet access, administrative workflows, or sensitive internal applications. Mitigation focus: Upgrade Firefox to 40.0.3, Firefox ESR 38.2.1, or later.; Apply relevant Debian, Ubuntu, SUSE, Red Hat, or Oracle browser package advisories.; Remove or isolate unsupported legacy browser installations..

Prepared: Jun 13, 2026, 22:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 29, 2015, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.mozilla.org/show_bug.cgi?id=1042699CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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